MSCS: Add support to send MSCS Request frames
Add support to send MSCS add/change/remove types of Action frames to the connected AP. Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>master
parent
1733e356e4
commit
a118047245
@ -0,0 +1,98 @@
|
||||
/*
|
||||
* wpa_supplicant - Robust AV procedures
|
||||
* Copyright (c) 2020, The Linux Foundation
|
||||
*
|
||||
* This software may be distributed under the terms of the BSD license.
|
||||
* See README for more details.
|
||||
*/
|
||||
|
||||
#include "utils/includes.h"
|
||||
#include "utils/common.h"
|
||||
#include "common/wpa_ctrl.h"
|
||||
#include "wpa_supplicant_i.h"
|
||||
#include "driver_i.h"
|
||||
#include "bss.h"
|
||||
|
||||
|
||||
void wpas_populate_mscs_descriptor_ie(struct robust_av_data *robust_av,
|
||||
struct wpabuf *buf)
|
||||
{
|
||||
u8 *len, *len1;
|
||||
|
||||
/* MSCS descriptor element */
|
||||
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
||||
len = wpabuf_put(buf, 1);
|
||||
wpabuf_put_u8(buf, WLAN_EID_EXT_MSCS_DESCRIPTOR);
|
||||
wpabuf_put_u8(buf, robust_av->request_type);
|
||||
wpabuf_put_u8(buf, robust_av->up_bitmap);
|
||||
wpabuf_put_u8(buf, robust_av->up_limit);
|
||||
wpabuf_put_le32(buf, robust_av->stream_timeout);
|
||||
|
||||
if (robust_av->request_type != SCS_REQ_REMOVE) {
|
||||
/* TCLAS mask element */
|
||||
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
||||
len1 = wpabuf_put(buf, 1);
|
||||
wpabuf_put_u8(buf, WLAN_EID_EXT_TCLAS_MASK);
|
||||
|
||||
/* Frame classifier */
|
||||
wpabuf_put_data(buf, robust_av->frame_classifier,
|
||||
robust_av->frame_classifier_len);
|
||||
*len1 = (u8 *) wpabuf_put(buf, 0) - len1 - 1;
|
||||
}
|
||||
|
||||
*len = (u8 *) wpabuf_put(buf, 0) - len - 1;
|
||||
}
|
||||
|
||||
|
||||
int wpas_send_mscs_req(struct wpa_supplicant *wpa_s)
|
||||
{
|
||||
struct wpabuf *buf;
|
||||
const u8 *ext_capab = NULL;
|
||||
size_t buf_len;
|
||||
int ret;
|
||||
|
||||
if (wpa_s->wpa_state != WPA_COMPLETED || !wpa_s->current_ssid)
|
||||
return 0;
|
||||
|
||||
if (wpa_s->current_bss)
|
||||
ext_capab = wpa_bss_get_ie(wpa_s->current_bss,
|
||||
WLAN_EID_EXT_CAPAB);
|
||||
|
||||
if (!ext_capab || ext_capab[1] < 11 || !(ext_capab[12] & 0x20)) {
|
||||
wpa_dbg(wpa_s, MSG_INFO,
|
||||
"AP does not support MSCS - could not send MSCS Req");
|
||||
return -1;
|
||||
}
|
||||
|
||||
buf_len = 3 + /* Action frame header */
|
||||
3 + /* MSCS descriptor IE header */
|
||||
1 + /* Request type */
|
||||
2 + /* User priority control */
|
||||
4 + /* Stream timeout */
|
||||
3 + /* TCLAS Mask IE header */
|
||||
wpa_s->robust_av.frame_classifier_len;
|
||||
|
||||
buf = wpabuf_alloc(buf_len);
|
||||
if (!buf) {
|
||||
wpa_printf(MSG_ERROR, "Failed to allocate MSCS req");
|
||||
return -1;
|
||||
}
|
||||
|
||||
wpabuf_put_u8(buf, WLAN_ACTION_ROBUST_AV_STREAMING);
|
||||
wpabuf_put_u8(buf, ROBUST_AV_MSCS_REQ);
|
||||
wpa_s->robust_av.dialog_token++;
|
||||
wpabuf_put_u8(buf, wpa_s->robust_av.dialog_token);
|
||||
|
||||
/* MSCS descriptor element */
|
||||
wpas_populate_mscs_descriptor_ie(&wpa_s->robust_av, buf);
|
||||
|
||||
wpa_hexdump_buf(MSG_MSGDUMP, "MSCS Request", wpabuf_head(buf));
|
||||
ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
|
||||
wpa_s->own_addr, wpa_s->bssid,
|
||||
wpabuf_head(buf), wpabuf_len(buf), 0);
|
||||
if (ret < 0)
|
||||
wpa_dbg(wpa_s, MSG_INFO, "MSCS: Failed to send MSCS Request");
|
||||
|
||||
wpabuf_free(buf);
|
||||
return ret;
|
||||
}
|
Loading…
Reference in New Issue